21513517

素因数分解:

${\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{193}}^1$

素因数の和:372

約数の個数: 16

約数和(自身を含む): 23466240

約数和(自身を除く): 1952723

約数列:

[1, 17, 79, 83, 193, 1343, 1411, 3281, 6557, 15247, 16019, 111469, 259199, 272323, 1265501, 21513517]

約数ペア:

[(1, 21513517), (17, 1265501), (79, 272323), (83, 259199), (193, 111469), (1343, 16019), (1411, 15247), (3281, 6557)]